C07D 251/40
Nitrogen atoms
C07D251/40 (Nitrogen atoms) appears on 1,241 US grants and 821 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,241
- Published applications
- 821
- Assignees
- 512
- Inventors
- 2,710
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 28 | 0 |
| 1978 | 24 | 0 |
| 1979 | 21 | 0 |
| 1980 | 28 | 0 |
| 1981 | 35 | 0 |
| 1982 | 21 | 0 |
| 1983 | 19 | 0 |
| 1984 | 28 | 0 |
| 1985 | 20 | 0 |
| 1986 | 20 | 0 |
| 1987 | 30 | 0 |
| 1988 | 23 | 0 |
| 1989 | 20 | 0 |
| 1990 | 22 | 0 |
| 1991 | 14 | 0 |
| 1992 | 21 | 0 |
| 1993 | 23 | 0 |
| 1994 | 21 | 0 |
| 1995 | 21 | 0 |
| 1996 | 25 | 0 |
| 1997 | 22 | 0 |
| 1998 | 33 | 0 |
| 1999 | 17 | 0 |
| 2000 | 33 | 0 |
| 2001 | 38 | 7 |
| 2002 | 45 | 36 |
| 2003 | 25 | 47 |
| 2004 | 39 | 52 |
| 2005 | 24 | 41 |
| 2006 | 28 | 40 |
| 2007 | 30 | 41 |
| 2008 | 26 | 33 |
| 2009 | 21 | 42 |
| 2010 | 17 | 36 |
| 2011 | 33 | 30 |
| 2012 | 21 | 45 |
| 2013 | 30 | 43 |
| 2014 | 36 | 39 |
| 2015 | 35 | 33 |
| 2016 | 30 | 31 |
| 2017 | 35 | 33 |
| 2018 | 25 | 15 |
| 2019 | 23 | 23 |
| 2020 | 13 | 28 |
| 2021 | 17 | 22 |
| 2022 | 16 | 19 |
| 2023 | 14 | 23 |
| 2024 | 14 | 29 |
| 2025 | 19 | 21 |
| 2026 | 3 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Triazine silane compound and its usage as adhesion promotor6 Oct 2026US 12,753,194 B2Atotech Deutschland GmbH
- Poly (melamine-co-oxalyl), methods of synthesizing and using same and articles treated with same18 Aug 2026US 12,709,661 B2State of Israel Prime Minister's Office Israel Institute for Biological Research
- Gas generant compositions comprising melamine oxalate for use in automotive restraint devices9 Jun 2026US 12,649,701 B2Autoliv ASP, Inc.
- Receptor tyrosine kinase inhibitors for treatment of protein kinase modulation-responsive disease or disorder2 Dec 2025US 12,486,270 B2The United States of America, as represented by the Secretary, Department of Health and Human Services
- Compound having anti-aging and discoloration resistance effects and preparation method therefor11 Nov 2025US 12,466,797 B2Sennics Co., Ltd.
- Process for the synthesis of melamine with an optimized dissolution and ammonolysis step8 Oct 2026US 2026/0308133 A1Eurotecnica Contractors & Engineers S.p.A.
- Process for the production of high-purity melamine from the pyrolysis of urea, with optimization of the deammoniation step of the mother liquors8 Oct 2026US 2026/0308134 A1Eurotecnica Contractors & Engineers S.p.A.
- Melamine process with urea melt-based washing of melamine offgas1 Oct 2026US 2026/0297039 A1Casale SA
- Novel tag for liquid-phase peptide synthesis17 Sep 2026US 2026/0274806 A1Cordenpharma International
- Photosensitive resin composition, resin film having pattern and method for producing same, and semiconductor circuit board16 Jul 2026US 2026/0202742 A1Jsr Corporation
Most cited
By later US patents
- Herbicidal sulfonamides124US 4,127,405 AE. I. Du Pont de Nemours and Company · 1978
- Herbicidal sulfonamides102US 4,169,719 AE. I. Du Pont de Nemours and Company · 1979
- Compounds and compositions as protein kinase inhibitors85US 8,552,002 B2Irm LLC · 2013
- Alkylcarbamylmethylated amino-triazine crosslinking agents and curable compositions containing the same84US 4,710,542 AAmerican Cyanamid Company · 1987
- Triazine derivatives83US 6,193,960 B1Ciba Specialty Chemicals Corporation · 2001